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The type of nuclear reaction shown below is which can be recognized by the fact that it has 2 reactant and 2 products
Show the orbital-filling diagram for S (sulfur). Stack the subshells in order of energy, with the lowest-energy subshell at the bottom and the highest-energy subshell at the top.
Most of the solid did not dissolve because the Ksp of ferric hydroxide is very small at 3 x 10^-39. However, when a certain amount of strong acid was added, the entire amount of solid dissolved. Det
An electron in the n2= 5 level of an H atom emits a photon of wavelength 1282.17 nm. To what energy does the electron move. Is the photon in the visible region
Based on position in the periodic table and electron configuration, arrange these elements in order of decreasing Ei1. Rank the elements from highest to lowest ionization energy
Electron configurations are a shorthand form of an orbital diagram, describing which orbitals are occupied for a given element. For example, 1s^22s^22p^1 is the electron configuration of boron.
What is the partial pressure of N2(g) (in atm) in a container filled with 0.1 mol N2(g), 0.2 mol O2(g) and 0.35 mol CH4(g) when the total pressure in the container is 5.0 atm
How fast must a 143.5 baseball travel in order to have a de broglie wavelength that is equal to that of an xray photon with landa = 79.0 pm? what is the energy level?
Balance the following redox equation . Once you have balanced the equation calculate how many grams of ammonia will be produced starting from 10 g of Zn
Assuming no loss of water and a heat capacity for the vessel of 10.0 J/C, what is the final temperature of the system ( C of copper = 0.387J/gC) ? What is the final temperature?
Consider the following data showing the initial rate of a reaction at several different concentrations of A
Balance the following oxidation-reduction reactions that occur in basic solution. Use the lowest possible coefficients. Include states-of-matter under the given conditions in your answer.
Hospital X-ray generators emit X-rays with wavelength of about 15.0 nanometers (nm), where 1 nm= 10^-9 m. What is the energy of the X-rays
A radio station's channel, such as 100.7 FM or 92.3 FM, is actually its frequency in megahertz MHz, where 1MHz=10^6 Hz. Calculate the broadcast wavelength of the radio station 96.50 FM.
What wavelength lambda should the astrophysicist look for to detect a transition of an electron from the n= 7 to the n=3 level
What are the concentrations of barium and sulfate ions in this solution? Assume only SO42- ions (no HSO4? ) are present
A solution contains 0.37 M Ni(NO3)2 and 0.37 M Cu(NO3)2. Can the metal ions be separated by slowly adding Na2CO3? Assume that for successful separation 99% of the metal ion must be precipitated befo
The concentration of Ag+ in a solution saturated with Ag2C2O4(s) is 2.2 multiplied by 10-4 M. Calculate Ksp for Ag2C2O4.
The activation energy of a certain reaction is 47.9 kJ/mol. At 27 Celsius, the rate constant is 0.0120 s^-1. At what temperature in degrees Celsius would this reaction go twice as fast
A solution is prepared by mixing 70.0 mL of 0.010 M BaCl2 and 175 mL of 0.080 M K2SO4. What are the concentrations of barium and sulfate ions in this solution? Assume only SO42- ions (no HSO4? ) are
The concentration of Mg2+ in seawater is 0.052 M. At what pH will 86% of the Mg2+ be precipitated as the hydroxide salt? [Ksp for Mg(OH)2 = 8.9 10-12.]
A 14.7-g ice cube is placed into 324 g of water. Calculate the temperature change in the water upon complete melting of the ice. Determine how much heat is absorbed by the melting ice and then use q
How many kilojoules of heat are required to change 50.0 grams of ice starting at -20.0 C to 50 grams of steam at 125 C. (C is Celsius)
Draw all possible mesomeric structures of the carbocationic intermediate in the chlorination of benzoic acid. Explain why m-chlorobenzoic acid is the main product
A gaseous mixture contains 407.0 Torr of H2 , 377.5 Torr of N2 , and 83.3 Torr of Ar , calculate the mole fraction, X, of each of these gases . X H2 : number